src/gen/xform.c

/* Copyright (c) 1991 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  xform.c - program to transform object files.
 *              Transformations must preserve aspect ratio.
 *
 *     10/19/85
 *     11/6/86          Finally added error checking!
 */

#include  "standard.h"

#include  <ctype.h>

#include  "object.h"

#include  "otypes.h"

int  xac;                               /* global xform argument count */
char  **xav;                            /* global xform argument pointer */
int  xfa;                               /* start of xf arguments */

XF  tot;                                /* total transformation */
int  reverse;                           /* boolean true if scene inverted */

int  expand = 0;                        /* boolean true to expand commands */

char  *newmod = NULL;                   /* new modifier for surfaces */

char  *idprefix = NULL;                 /* prefix for object identifiers */

#define  ALIAS          NUMOTYPE        /* put alias at end of array */

#define  NUMTYPES       (NUMOTYPE+1)    /* total number of object types */

FUN  ofun[NUMTYPES] = INIT_OTYPE;       /* default types and actions */

extern char  *malloc(), *fgetword();

#define  progname  (xav[0])


main(argc, argv)                /* get transform options and transform file */
int  argc;
char  *argv[];
{
        FILE  *fopen();
        FILE  *fp;
        int  a;
                                        /* check for array */
        for (a = 1; a < argc; a++)
                if (!strcmp(argv[a], "-a"))
                        return(doarray(argc, argv, a));

        initotypes();

        for (a = 1; a < argc; a++) {
                if (argv[a][0] == '-')
                        switch (argv[a][1]) {
                        case 'm':
                                if (argv[a][2] || a+1 >= argc)
                                        break;
                                newmod = argv[++a];
                                continue;
                        case 'n':
                                if (argv[a][2] || a+1 >= argc)
                                        break;
                                idprefix = argv[++a];
                                continue;
                        case 'e':
                                if (argv[a][2])
                                        break;
                                expand = 1;
                                continue;
                        }
                break;
        }

        xav = argv;
        xfa = a;

        a += xf(&tot, argc-a, argv+a);

        if (reverse = tot.sca < 0.0)
                tot.sca = -tot.sca;

        if (a < argc && argv[a][0] == '-') {
                fprintf(stderr, "%s: command line error at '%s'\n",
                                argv[0], argv[a]);
                exit(1);
        }

        xac = a;
                                        /* simple header */
        putchar('#');
        for (a = 0; a < xac; a++)
                printf(" %s", xav[a]);
        putchar('\n');
                                        /* transform input */
        if (xac == argc)
                xform("standard input", stdin);
        else
                for (a = xac; a < argc; a++) {
                        if ((fp = fopen(argv[a], "r")) == NULL) {
                                fprintf(stderr, "%s: cannot open \"%s\"\n",
                                                progname, argv[a]);
                                exit(1);
                        }
                        xform(argv[a], fp);
                        fclose(fp);
                }

        return(0);
}


doarray(ac, av, ai)                     /* make array */
char  **av;
int  ac, ai;
{
        char  *newav[256], **avp;
        char  newid[128], repts[32];
        char  *oldid = NULL;
        int  i, err;
        
        avp = newav+2;
        avp[0] = av[0];
        for (i = 1; i < ac; i++)
                if (!strcmp(av[i-1], "-n")) {
                        oldid = av[i];
                        avp[i] = newid;
                } else
                        avp[i] = av[i];
        avp[ai] = "-i";
        avp[ai+1] = repts;
        avp[i] = NULL;
        if (oldid == NULL) {
                newav[0] = av[0];
                newav[1] = "-n";
                newav[2] = newid;
                avp = newav;
                ac += 2;
        }
        err = 0;
        for (i = 0; i < atoi(av[ai+1]); i++) {
                if (oldid == NULL)
                        sprintf(newid, "a%d", i);
                else
                        sprintf(newid, "%s.%d", oldid, i);
                sprintf(repts, "%d", i);
                err |= main(ac, avp);
        }
        return(err);
}


xform(name, fin)                        /* transform stream by tot.xfm */
char  *name;
register FILE  *fin;
{
        register int  c;

        while ((c = getc(fin)) != EOF) {
                if (isspace(c))                         /* blank */
                        continue;
                if (c == '#') {                         /* comment */
                        putchar(c);
                        do {
                                if ((c = getc(fin)) == EOF)
                                        return;
                                putchar(c);
                        } while (c != '\n');
                } else if (c == '!') {                  /* command */
                        ungetc(c, fin);
                        xfcomm(name, fin);
                } else {                                /* object */
                        ungetc(c, fin);
                        xfobject(name, fin);
                }
        }
}


xfcomm(fname, fin)                      /* transform a command */
FILE  *fin;
{
        FILE  *popen();
        char  *fgetline();
        FILE  *pin;
        char  buf[512];
        int  i;

        fgetline(buf, sizeof(buf), fin);
        if (expand) {
                if (xac > 2) {
                        if ((pin = popen(buf+1, "r")) == NULL) {
                                fprintf(stderr,
                                "%s: (%s): cannot execute \"%s\"\n",
                                                progname, fname, buf);
                                exit(1);
                        }
                        xform(buf, pin);
                        pclose(pin);
                } else {
                        fflush(stdout);
                        system(buf+1);
                }
        } else {
                printf("\n%s", buf);
                if (xac > 1) {
                        printf(" | %s -e", xav[0]);
                        for (i = 1; i < xac; i++)
                                printf(" %s", xav[i]);
                }
                putchar('\n');
        }
}


xfobject(fname, fin)                            /* transform an object */
char  *fname;
FILE  *fin;
{
        char  typ[16], nam[MAXSTR];
        int  fn;
                                                /* modifier and type */
        strcpy(typ, "EOF");
        fgetword(nam, sizeof(nam), fin);
        fgetword(typ, sizeof(typ), fin);
        if ((fn = otype(typ)) < 0) {
                fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n",
                                progname, fname, typ);
                exit(1);
        }
        printf("\n%s %s ", newmod!=NULL && issurface(fn) ? newmod : nam, typ);
                                                /* object name */
        fgetword(nam, sizeof(nam), fin);
        if (idprefix != NULL && issurface(fn))
                printf("%s.%s\n", idprefix, nam);
        else
                printf("%s\n", nam);
                                                /* transform arguments */
        if ((*ofun[fn].funp)(fin) < 0) {
                fprintf(stderr, "%s: (%s): bad %s \"%s\"\n",
                                progname, fname, ofun[fn].funame, nam);
                exit(1);
        }
}


o_default(fin)                  /* pass on arguments unchanged */
FILE  *fin;
{
        register int  i;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
                                        /* string arguments */
        printf("%d", fa.nsargs);
        for (i = 0; i < fa.nsargs; i++)
                printf(" %s", fa.sarg[i]);
        printf("\n");
#ifdef  IARGS
                                        /* integer arguments */
        printf("%d", fa.niargs);
        for (i = 0; i < fa.niargs; i++)
                printf(" %d", fa.iarg[i]);
        printf("\n");
#else
        printf("0\n");
#endif
                                        /* float arguments */
        printf("%d", fa.nfargs);
        for (i = 0; i < fa.nfargs; i++)
                printf(" %18.12g", fa.farg[i]);
        printf("\n");
        freefargs(&fa);
        return(0);
}


addxform(fin)                   /* add xf arguments to strings */
FILE  *fin;
{
        register int  i;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
                                        /* string arguments */
        printf("%d", fa.nsargs + xac-xfa);
        for (i = 0; i < fa.nsargs; i++)
                printf(" %s", fa.sarg[i]);
        for (i = xfa; i < xac; i++)     /* add xf arguments */
                printf(" %s", xav[i]);
        printf("\n");
#ifdef  IARGS
                                        /* integer arguments */
        printf("%d", fa.niargs);
        for (i = 0; i < fa.niargs; i++)
                printf(" %d", fa.iarg[i]);
        printf("\n");
#else
        printf("0\n");
#endif
                                        /* float arguments */
        printf("%d", fa.nfargs);
        for (i = 0; i < fa.nfargs; i++)
                printf(" %18.12g", fa.farg[i]);
        printf("\n");
        freefargs(&fa);
        return(0);
}


int
otype(ofname)                   /* get object function number from its name */
register char  *ofname;
{
        register int  i;

        for (i = 0; i < NUMTYPES; i++)
                if (!strcmp(ofun[i].funame, ofname))
                        return(i);

        return(-1);             /* not found */
}


alias(fin)                      /* transfer alias */
FILE  *fin;
{
        char  aliasnm[MAXSTR];

        if (fgetword(aliasnm, MAXSTR, fin) == NULL)
                return(-1);
        printf("\t%s\n", aliasnm);
        return(0);
}


m_glow(fin)                     /* transform arguments for proximity light */
FILE  *fin;
{
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g",
                        fa.farg[0], fa.farg[1], fa.farg[2]);
        printf(" %18.12g\n", fa.farg[3] * tot.sca);
        freefargs(&fa);
        return(0);
}


m_spot(fin)                     /* transform arguments for spotlight */
FILE  *fin;
{
        double  v[3];
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 7)
                return(-1);
        printf("0\n0\n7");
        printf(" %18.12g %18.12g %18.12g %18.12g\n",
                        fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]);
        multv3(v, fa.farg+4, tot.xfm);
        printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
        freefargs(&fa);
        return(0);
}


m_dielectric(fin)               /* transform arguments for dielectric */
FILE  *fin;
{
        double  pow();
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 5)
                return(-1);
        printf("0\n0\n5");
        printf(" %18.12g %18.12g %18.12g",
                pow(fa.farg[0], 1.0/tot.sca),
                pow(fa.farg[1], 1.0/tot.sca),
                pow(fa.farg[2], 1.0/tot.sca));
        printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]);
        freefargs(&fa);
        return(0);
}


m_interface(fin)                /* transform arguments for interface */
FILE  *fin;
{
        double  pow();
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 8)
                return(-1);
        printf("0\n0\n8\n");
        printf("%18.12g %18.12g %18.12g",
                pow(fa.farg[0], 1.0/tot.sca),
                pow(fa.farg[1], 1.0/tot.sca),
                pow(fa.farg[2], 1.0/tot.sca));
        printf(" %18.12g\n", fa.farg[3]);
        printf("%18.12g %18.12g %18.12g",
                pow(fa.farg[4], 1.0/tot.sca),
                pow(fa.farg[5], 1.0/tot.sca),
                pow(fa.farg[6], 1.0/tot.sca));
        printf(" %18.12g\n", fa.farg[7]);
        freefargs(&fa);
        return(0);
}


text(fin)                       /* transform text arguments */
FILE  *fin;
{
        int  i;
        double  v[3];
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nfargs != 9 && fa.nfargs != 11 && fa.nfargs != 15)
                return(-1);
                                        /* string arguments */
        printf("%d", fa.nsargs);
        for (i = 0; i < fa.nsargs; i++)
                printf(" %s", fa.sarg[i]);
        printf("\n0\n%d\n", fa.nfargs);
                                        /* anchor point */
        multp3(v, fa.farg, tot.xfm);
        printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
                                        /* right vector */
        multv3(v, fa.farg+3, tot.xfm);
        printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
                                        /* down vector */
        multv3(v, fa.farg+6, tot.xfm);
        printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
                                        /* forground and background */
        if (fa.nfargs == 11)
                printf(" %18.12g %18.12g\n", fa.farg[9], fa.farg[10]);
        else if (fa.nfargs == 15) {
                printf(" %18.12g %18.12g %18.12g\n",
                                fa.farg[9], fa.farg[10], fa.farg[11]);
                printf(" %18.12g %18.12g %18.12g\n",
                                fa.farg[12], fa.farg[13], fa.farg[14]);
        }
        freefargs(&fa);
        return(0);
}


o_source(fin)                   /* transform source arguments */
FILE  *fin;
{
        double  dv[3];
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
                                        /* transform direction vector */
        multv3(dv, fa.farg, tot.xfm);
                                        /* output */
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g %18.12g\n",
                        dv[0], dv[1], dv[2], fa.farg[3]);
        freefargs(&fa);
        return(0);
}


o_sphere(fin)                   /* transform sphere arguments */
FILE  *fin;
{
        double  cent[3], rad;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
        
        multp3(cent, fa.farg, tot.xfm); /* transform center */
        
        rad = fa.farg[3] * tot.sca;             /* scale radius */
        
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g %18.12g\n",
                        cent[0], cent[1], cent[2], rad);
        freefargs(&fa);
        return(0);
}


o_face(fin)                     /* transform face arguments */
FILE  *fin;
{
        double  p[3];
        register int  i;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs % 3)
                return(-1);
        
        printf("0\n0\n%d\n", fa.nfargs);
        
        for (i = 0; i < fa.nfargs; i += 3) {
                if (reverse)
                        multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm);
                else
                        multp3(p, fa.farg+i, tot.xfm);
                printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]);
        }
        freefargs(&fa);
        return(0);
}


o_cone(fin)                     /* transform cone and cup arguments */
FILE  *fin;
{
        double  p0[3], p1[3], r0, r1;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 8)
                return(-1);

        printf("0\n0\n8\n");

        multp3(p0, fa.farg, tot.xfm);
        multp3(p1, fa.farg+3, tot.xfm);
        r0 = fa.farg[6] * tot.sca;
        r1 = fa.farg[7] * tot.sca;
        printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
        printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
        printf(" %18.12g %18.12g\n", r0, r1);

        freefargs(&fa);
        return(0);
}


o_cylinder(fin)                 /* transform cylinder and tube arguments */
FILE  *fin;
{
        double  p0[3], p1[3], rad;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 7)
                return(-1);

        printf("0\n0\n7\n");

        multp3(p0, fa.farg, tot.xfm);
        multp3(p1, fa.farg+3, tot.xfm);
        rad = fa.farg[6] * tot.sca;
        printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
        printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
        printf(" %18.12g\n", rad);
        freefargs(&fa);
        return(0);
}


o_ring(fin)                     /* transform ring arguments */
FILE  *fin;
{
        double  p0[3], pd[3], r0, r1;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 8)
                return(-1);

        printf("0\n0\n8\n");

        multp3(p0, fa.farg, tot.xfm);
        multv3(pd, fa.farg+3, tot.xfm);
        r0 = fa.farg[6] * tot.sca;
        r1 = fa.farg[7] * tot.sca;
        printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
        printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]);
        printf(" %18.12g %18.12g\n", r0, r1);
        freefargs(&fa);
        return(0);
}


initotypes()                    /* initialize ofun[] array */
{
        extern int  o_source();
        extern int  o_sphere();
        extern int  o_face();
        extern int  o_cone();
        extern int  o_cylinder();
        extern int  o_ring();
        extern int  m_glow();
        extern int  m_spot();
        extern int  m_dielectric();
        extern int  m_interface();
        extern int  text();
        extern int  alias();
        extern int  passargs();
        extern int  addxform();
        register int  i;

        if (ofun[OBJ_SOURCE].funp == o_source)
                return;                 /* done already */
                                        /* alias is additional */
        ofun[ALIAS].funame = ALIASID;
        ofun[ALIAS].flags = 0;
                                        /* functions get new transform */
        for (i = 0; i < NUMTYPES; i++)
                if (hasfunc(i))
                        ofun[i].funp = addxform;
                                        /* special cases */
        ofun[OBJ_SOURCE].funp = o_source;
        ofun[OBJ_SPHERE].funp =
        ofun[OBJ_BUBBLE].funp = o_sphere;
        ofun[OBJ_FACE].funp = o_face;
        ofun[OBJ_CONE].funp =
        ofun[OBJ_CUP].funp = o_cone;
        ofun[OBJ_CYLINDER].funp =
        ofun[OBJ_TUBE].funp = o_cylinder;
        ofun[OBJ_RING].funp = o_ring;
        ofun[OBJ_INSTANCE].funp = addxform;
        ofun[MAT_GLOW].funp = m_glow;
        ofun[MAT_SPOT].funp = m_spot;
        ofun[MAT_DIELECTRIC].funp = m_dielectric;
        ofun[MAT_INTERFACE].funp = m_interface;
        ofun[PAT_CTEXT].funp =
        ofun[PAT_BTEXT].funp =
        ofun[MIX_TEXT].funp = text;
        ofun[ALIAS].funp = alias;
}
Revision:	1.15
Committed:	Tue Jul 23 15:24:21 1991 UTC (32 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.14:	+23 -17 lines
Log Message:	moved readfargs() to library
#	User	Rev	Content
1	greg	1.13	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* xform.c - program to transform object files.
9			* Transformations must preserve aspect ratio.
10			*
11			* 10/19/85
12			* 11/6/86 Finally added error checking!
13			*/
14
15	greg	1.12	#include "standard.h"
16	greg	1.1
17			#include <ctype.h>
18
19	greg	1.14	#include "object.h"
20
21	greg	1.11	#include "otypes.h"
22	greg	1.1
23			int xac; /* global xform argument count */
24			char *xav; / global xform argument pointer */
25			int xfa; /* start of xf arguments */
26
27	greg	1.12	XF tot; /* total transformation */
28	greg	1.1	int reverse; /* boolean true if scene inverted */
29
30			int expand = 0; /* boolean true to expand commands */
31
32	greg	1.13	char newmod = NULL; / new modifier for surfaces */
33
34	greg	1.1	char idprefix = NULL; / prefix for object identifiers */
35
36	greg	1.11	#define ALIAS NUMOTYPE /* put alias at end of array */
37	greg	1.1
38	greg	1.11	#define NUMTYPES (NUMOTYPE+1) /* total number of object types */
39	greg	1.1
40	greg	1.11	FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */
41	greg	1.1
42	greg	1.15	extern char malloc(), fgetword();
43	greg	1.1
44			#define progname (xav[0])
45
46
47			main(argc, argv) /* get transform options and transform file */
48			int argc;
49			char *argv[];
50			{
51			FILE *fopen();
52			FILE *fp;
53			int a;
54	greg	1.8	/* check for array */
55			for (a = 1; a < argc; a++)
56			if (!strcmp(argv[a], "-a"))
57			return(doarray(argc, argv, a));
58	greg	1.1
59	greg	1.11	initotypes();
60
61	greg	1.1	for (a = 1; a < argc; a++) {
62			if (argv[a][0] == '-')
63			switch (argv[a][1]) {
64	greg	1.13	case 'm':
65			if (argv[a][2] \|\| a+1 >= argc)
66			break;
67			newmod = argv[++a];
68			continue;
69	greg	1.1	case 'n':
70	greg	1.9	if (argv[a][2] \|\| a+1 >= argc)
71			break;
72	greg	1.1	idprefix = argv[++a];
73			continue;
74			case 'e':
75	greg	1.9	if (argv[a][2])
76			break;
77	greg	1.1	expand = 1;
78			continue;
79			}
80			break;
81			}
82
83	greg	1.8	xav = argv;
84	greg	1.1	xfa = a;
85
86	greg	1.12	a += xf(&tot, argc-a, argv+a);
87	greg	1.1
88	greg	1.12	if (reverse = tot.sca < 0.0)
89			tot.sca = -tot.sca;
90	greg	1.1
91	greg	1.9	if (a < argc && argv[a][0] == '-') {
92			fprintf(stderr, "%s: command line error at '%s'\n",
93			argv[0], argv[a]);
94			exit(1);
95			}
96	greg	1.10
97	greg	1.1	xac = a;
98	greg	1.10	/* simple header */
99			putchar('#');
100	greg	1.1	for (a = 0; a < xac; a++)
101			printf(" %s", xav[a]);
102			putchar('\n');
103	greg	1.10	/* transform input */
104			if (xac == argc)
105	greg	1.1	xform("standard input", stdin);
106			else
107	greg	1.10	for (a = xac; a < argc; a++) {
108	greg	1.1	if ((fp = fopen(argv[a], "r")) == NULL) {
109			fprintf(stderr, "%s: cannot open \"%s\"\n",
110			progname, argv[a]);
111			exit(1);
112			}
113			xform(argv[a], fp);
114			fclose(fp);
115			}
116
117	greg	1.8	return(0);
118			}
119
120
121			doarray(ac, av, ai) /* make array */
122			char **av;
123			int ac, ai;
124			{
125			char newav[256], *avp;
126			char newid[128], repts[32];
127			char *oldid = NULL;
128			int i, err;
129
130			avp = newav+2;
131			avp[0] = av[0];
132			for (i = 1; i < ac; i++)
133			if (!strcmp(av[i-1], "-n")) {
134			oldid = av[i];
135			avp[i] = newid;
136			} else
137			avp[i] = av[i];
138			avp[ai] = "-i";
139			avp[ai+1] = repts;
140			avp[i] = NULL;
141			if (oldid == NULL) {
142			newav[0] = av[0];
143			newav[1] = "-n";
144			newav[2] = newid;
145			avp = newav;
146			ac += 2;
147			}
148			err = 0;
149			for (i = 0; i < atoi(av[ai+1]); i++) {
150			if (oldid == NULL)
151			sprintf(newid, "a%d", i);
152			else
153			sprintf(newid, "%s.%d", oldid, i);
154			sprintf(repts, "%d", i);
155			err \|= main(ac, avp);
156			}
157			return(err);
158	greg	1.1	}
159
160
161	greg	1.12	xform(name, fin) /* transform stream by tot.xfm */
162	greg	1.1	char *name;
163			register FILE *fin;
164			{
165			register int c;
166
167			while ((c = getc(fin)) != EOF) {
168			if (isspace(c)) /* blank */
169			continue;
170			if (c == '#') { /* comment */
171			putchar(c);
172			do {
173			if ((c = getc(fin)) == EOF)
174			return;
175			putchar(c);
176			} while (c != '\n');
177			} else if (c == '!') { /* command */
178			ungetc(c, fin);
179	greg	1.7	xfcomm(name, fin);
180	greg	1.1	} else { /* object */
181			ungetc(c, fin);
182			xfobject(name, fin);
183			}
184			}
185			}
186
187
188	greg	1.7	xfcomm(fname, fin) /* transform a command */
189	greg	1.1	FILE *fin;
190			{
191			FILE *popen();
192	greg	1.7	char *fgetline();
193	greg	1.1	FILE *pin;
194			char buf[512];
195	greg	1.7	int i;
196	greg	1.1
197	greg	1.7	fgetline(buf, sizeof(buf), fin);
198			if (expand) {
199	greg	1.10	if (xac > 2) {
200			if ((pin = popen(buf+1, "r")) == NULL) {
201			fprintf(stderr,
202			"%s: (%s): cannot execute \"%s\"\n",
203			progname, fname, buf);
204			exit(1);
205			}
206			xform(buf, pin);
207			pclose(pin);
208			} else {
209			fflush(stdout);
210			system(buf+1);
211	greg	1.7	}
212			} else {
213	greg	1.10	printf("\n%s", buf);
214			if (xac > 1) {
215			printf(" \| %s -e", xav[0]);
216			for (i = 1; i < xac; i++)
217			printf(" %s", xav[i]);
218			}
219	greg	1.7	putchar('\n');
220	greg	1.1	}
221			}
222
223
224			xfobject(fname, fin) /* transform an object */
225			char *fname;
226			FILE *fin;
227			{
228	greg	1.13	char typ[16], nam[MAXSTR];
229	greg	1.1	int fn;
230	greg	1.13	/* modifier and type */
231	greg	1.15	strcpy(typ, "EOF");
232			fgetword(nam, sizeof(nam), fin);
233			fgetword(typ, sizeof(typ), fin);
234	greg	1.13	if ((fn = otype(typ)) < 0) {
235	greg	1.1	fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n",
236	greg	1.13	progname, fname, typ);
237	greg	1.1	exit(1);
238			}
239	greg	1.13	printf("\n%s %s ", newmod!=NULL && issurface(fn) ? newmod : nam, typ);
240			/* object name */
241	greg	1.15	fgetword(nam, sizeof(nam), fin);
242	greg	1.1	if (idprefix != NULL && issurface(fn))
243	greg	1.13	printf("%s.%s\n", idprefix, nam);
244	greg	1.1	else
245	greg	1.13	printf("%s\n", nam);
246			/* transform arguments */
247	greg	1.1	if ((*ofun[fn].funp)(fin) < 0) {
248			fprintf(stderr, "%s: (%s): bad %s \"%s\"\n",
249	greg	1.13	progname, fname, ofun[fn].funame, nam);
250	greg	1.1	exit(1);
251			}
252			}
253
254
255	greg	1.11	o_default(fin) /* pass on arguments unchanged */
256	greg	1.1	FILE *fin;
257			{
258			register int i;
259	greg	1.14	FUNARGS fa;
260	greg	1.1
261	greg	1.15	if (readfargs(&fa, fin) != 1)
262	greg	1.1	return(-1);
263			/* string arguments */
264	greg	1.14	printf("%d", fa.nsargs);
265			for (i = 0; i < fa.nsargs; i++)
266			printf(" %s", fa.sarg[i]);
267	greg	1.1	printf("\n");
268	greg	1.14	#ifdef IARGS
269	greg	1.1	/* integer arguments */
270	greg	1.14	printf("%d", fa.niargs);
271			for (i = 0; i < fa.niargs; i++)
272			printf(" %d", fa.iarg[i]);
273	greg	1.1	printf("\n");
274	greg	1.15	#else
275			printf("0\n");
276	greg	1.14	#endif
277	greg	1.1	/* float arguments */
278	greg	1.14	printf("%d", fa.nfargs);
279			for (i = 0; i < fa.nfargs; i++)
280			printf(" %18.12g", fa.farg[i]);
281	greg	1.1	printf("\n");
282	greg	1.14	freefargs(&fa);
283	greg	1.1	return(0);
284			}
285
286
287			addxform(fin) /* add xf arguments to strings */
288			FILE *fin;
289			{
290			register int i;
291	greg	1.14	FUNARGS fa;
292	greg	1.1
293	greg	1.15	if (readfargs(&fa, fin) != 1)
294	greg	1.1	return(-1);
295			/* string arguments */
296	greg	1.14	printf("%d", fa.nsargs + xac-xfa);
297			for (i = 0; i < fa.nsargs; i++)
298			printf(" %s", fa.sarg[i]);
299	greg	1.1	for (i = xfa; i < xac; i++) /* add xf arguments */
300			printf(" %s", xav[i]);
301			printf("\n");
302	greg	1.14	#ifdef IARGS
303	greg	1.1	/* integer arguments */
304	greg	1.14	printf("%d", fa.niargs);
305			for (i = 0; i < fa.niargs; i++)
306			printf(" %d", fa.iarg[i]);
307	greg	1.1	printf("\n");
308	greg	1.15	#else
309			printf("0\n");
310	greg	1.14	#endif
311	greg	1.1	/* float arguments */
312	greg	1.14	printf("%d", fa.nfargs);
313			for (i = 0; i < fa.nfargs; i++)
314			printf(" %18.12g", fa.farg[i]);
315	greg	1.1	printf("\n");
316	greg	1.14	freefargs(&fa);
317	greg	1.1	return(0);
318			}
319
320
321			int
322			otype(ofname) /* get object function number from its name */
323			register char *ofname;
324			{
325			register int i;
326
327	greg	1.11	for (i = 0; i < NUMTYPES; i++)
328	greg	1.1	if (!strcmp(ofun[i].funame, ofname))
329			return(i);
330
331			return(-1); /* not found */
332			}
333
334
335			alias(fin) /* transfer alias */
336			FILE *fin;
337			{
338	greg	1.12	char aliasnm[MAXSTR];
339	greg	1.1
340	greg	1.15	if (fgetword(aliasnm, MAXSTR, fin) == NULL)
341	greg	1.1	return(-1);
342	greg	1.12	printf("\t%s\n", aliasnm);
343	greg	1.5	return(0);
344			}
345
346
347			m_glow(fin) /* transform arguments for proximity light */
348			FILE *fin;
349			{
350	greg	1.14	FUNARGS fa;
351	greg	1.5
352	greg	1.15	if (readfargs(&fa, fin) != 1)
353	greg	1.5	return(-1);
354	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 4)
355	greg	1.5	return(-1);
356			printf("0\n0\n4");
357			printf(" %18.12g %18.12g %18.12g",
358	greg	1.14	fa.farg[0], fa.farg[1], fa.farg[2]);
359			printf(" %18.12g\n", fa.farg[3] * tot.sca);
360			freefargs(&fa);
361	greg	1.5	return(0);
362			}
363
364
365			m_spot(fin) /* transform arguments for spotlight */
366			FILE *fin;
367			{
368			double v[3];
369	greg	1.14	FUNARGS fa;
370	greg	1.5
371	greg	1.15	if (readfargs(&fa, fin) != 1)
372	greg	1.5	return(-1);
373	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 7)
374	greg	1.5	return(-1);
375			printf("0\n0\n7");
376			printf(" %18.12g %18.12g %18.12g %18.12g\n",
377	greg	1.14	fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]);
378			multv3(v, fa.farg+4, tot.xfm);
379	greg	1.5	printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
380	greg	1.14	freefargs(&fa);
381	greg	1.1	return(0);
382			}
383
384
385			m_dielectric(fin) /* transform arguments for dielectric */
386			FILE *fin;
387			{
388			double pow();
389	greg	1.14	FUNARGS fa;
390	greg	1.1
391	greg	1.15	if (readfargs(&fa, fin) != 1)
392	greg	1.1	return(-1);
393	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 5)
394	greg	1.1	return(-1);
395			printf("0\n0\n5");
396			printf(" %18.12g %18.12g %18.12g",
397	greg	1.14	pow(fa.farg[0], 1.0/tot.sca),
398			pow(fa.farg[1], 1.0/tot.sca),
399			pow(fa.farg[2], 1.0/tot.sca));
400			printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]);
401			freefargs(&fa);
402	greg	1.1	return(0);
403			}
404
405
406			m_interface(fin) /* transform arguments for interface */
407			FILE *fin;
408			{
409			double pow();
410	greg	1.14	FUNARGS fa;
411	greg	1.1
412	greg	1.15	if (readfargs(&fa, fin) != 1)
413	greg	1.1	return(-1);
414	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 8)
415	greg	1.1	return(-1);
416			printf("0\n0\n8\n");
417			printf("%18.12g %18.12g %18.12g",
418	greg	1.14	pow(fa.farg[0], 1.0/tot.sca),
419			pow(fa.farg[1], 1.0/tot.sca),
420			pow(fa.farg[2], 1.0/tot.sca));
421			printf(" %18.12g\n", fa.farg[3]);
422	greg	1.1	printf("%18.12g %18.12g %18.12g",
423	greg	1.14	pow(fa.farg[4], 1.0/tot.sca),
424			pow(fa.farg[5], 1.0/tot.sca),
425			pow(fa.farg[6], 1.0/tot.sca));
426			printf(" %18.12g\n", fa.farg[7]);
427			freefargs(&fa);
428	greg	1.1	return(0);
429			}
430
431
432			text(fin) /* transform text arguments */
433			FILE *fin;
434			{
435			int i;
436			double v[3];
437	greg	1.14	FUNARGS fa;
438	greg	1.1
439	greg	1.15	if (readfargs(&fa, fin) != 1)
440	greg	1.1	return(-1);
441	greg	1.14	if (fa.nfargs != 9 && fa.nfargs != 11 && fa.nfargs != 15)
442	greg	1.1	return(-1);
443			/* string arguments */
444	greg	1.14	printf("%d", fa.nsargs);
445			for (i = 0; i < fa.nsargs; i++)
446			printf(" %s", fa.sarg[i]);
447			printf("\n0\n%d\n", fa.nfargs);
448	greg	1.1	/* anchor point */
449	greg	1.14	multp3(v, fa.farg, tot.xfm);
450	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
451			/* right vector */
452	greg	1.14	multv3(v, fa.farg+3, tot.xfm);
453	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
454			/* down vector */
455	greg	1.14	multv3(v, fa.farg+6, tot.xfm);
456	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
457			/* forground and background */
458	greg	1.14	if (fa.nfargs == 11)
459			printf(" %18.12g %18.12g\n", fa.farg[9], fa.farg[10]);
460			else if (fa.nfargs == 15) {
461	greg	1.1	printf(" %18.12g %18.12g %18.12g\n",
462	greg	1.14	fa.farg[9], fa.farg[10], fa.farg[11]);
463	greg	1.1	printf(" %18.12g %18.12g %18.12g\n",
464	greg	1.14	fa.farg[12], fa.farg[13], fa.farg[14]);
465	greg	1.1	}
466	greg	1.14	freefargs(&fa);
467	greg	1.1	return(0);
468			}
469
470
471			o_source(fin) /* transform source arguments */
472			FILE *fin;
473			{
474			double dv[3];
475	greg	1.14	FUNARGS fa;
476	greg	1.1
477	greg	1.15	if (readfargs(&fa, fin) != 1)
478	greg	1.1	return(-1);
479	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 4)
480	greg	1.1	return(-1);
481			/* transform direction vector */
482	greg	1.14	multv3(dv, fa.farg, tot.xfm);
483	greg	1.1	/* output */
484			printf("0\n0\n4");
485			printf(" %18.12g %18.12g %18.12g %18.12g\n",
486	greg	1.14	dv[0], dv[1], dv[2], fa.farg[3]);
487			freefargs(&fa);
488	greg	1.1	return(0);
489			}
490
491
492			o_sphere(fin) /* transform sphere arguments */
493			FILE *fin;
494			{
495			double cent[3], rad;
496	greg	1.14	FUNARGS fa;
497	greg	1.1
498	greg	1.15	if (readfargs(&fa, fin) != 1)
499	greg	1.1	return(-1);
500	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 4)
501	greg	1.1	return(-1);
502
503	greg	1.14	multp3(cent, fa.farg, tot.xfm); /* transform center */
504	greg	1.1
505	greg	1.14	rad = fa.farg[3] * tot.sca; /* scale radius */
506	greg	1.1
507			printf("0\n0\n4");
508			printf(" %18.12g %18.12g %18.12g %18.12g\n",
509			cent[0], cent[1], cent[2], rad);
510	greg	1.14	freefargs(&fa);
511	greg	1.1	return(0);
512			}
513
514
515			o_face(fin) /* transform face arguments */
516			FILE *fin;
517			{
518			double p[3];
519			register int i;
520	greg	1.14	FUNARGS fa;
521	greg	1.1
522	greg	1.15	if (readfargs(&fa, fin) != 1)
523	greg	1.1	return(-1);
524	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs % 3)
525	greg	1.1	return(-1);
526
527	greg	1.14	printf("0\n0\n%d\n", fa.nfargs);
528	greg	1.1
529	greg	1.14	for (i = 0; i < fa.nfargs; i += 3) {
530	greg	1.1	if (reverse)
531	greg	1.14	multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm);
532	greg	1.1	else
533	greg	1.14	multp3(p, fa.farg+i, tot.xfm);
534	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]);
535			}
536	greg	1.14	freefargs(&fa);
537	greg	1.1	return(0);
538			}
539
540
541			o_cone(fin) /* transform cone and cup arguments */
542			FILE *fin;
543			{
544			double p0[3], p1[3], r0, r1;
545	greg	1.14	FUNARGS fa;
546	greg	1.1
547	greg	1.15	if (readfargs(&fa, fin) != 1)
548	greg	1.1	return(-1);
549	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 8)
550	greg	1.1	return(-1);
551
552			printf("0\n0\n8\n");
553
554	greg	1.14	multp3(p0, fa.farg, tot.xfm);
555			multp3(p1, fa.farg+3, tot.xfm);
556			r0 = fa.farg[6] * tot.sca;
557			r1 = fa.farg[7] * tot.sca;
558	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
559			printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
560			printf(" %18.12g %18.12g\n", r0, r1);
561
562	greg	1.14	freefargs(&fa);
563	greg	1.1	return(0);
564			}
565
566
567			o_cylinder(fin) /* transform cylinder and tube arguments */
568			FILE *fin;
569			{
570			double p0[3], p1[3], rad;
571	greg	1.14	FUNARGS fa;
572	greg	1.1
573	greg	1.15	if (readfargs(&fa, fin) != 1)
574	greg	1.1	return(-1);
575	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 7)
576	greg	1.1	return(-1);
577
578			printf("0\n0\n7\n");
579
580	greg	1.14	multp3(p0, fa.farg, tot.xfm);
581			multp3(p1, fa.farg+3, tot.xfm);
582			rad = fa.farg[6] * tot.sca;
583	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
584			printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
585			printf(" %18.12g\n", rad);
586	greg	1.14	freefargs(&fa);
587	greg	1.1	return(0);
588			}
589
590
591			o_ring(fin) /* transform ring arguments */
592			FILE *fin;
593			{
594			double p0[3], pd[3], r0, r1;
595	greg	1.14	FUNARGS fa;
596	greg	1.1
597	greg	1.15	if (readfargs(&fa, fin) != 1)
598	greg	1.1	return(-1);
599	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 8)
600	greg	1.1	return(-1);
601
602			printf("0\n0\n8\n");
603
604	greg	1.14	multp3(p0, fa.farg, tot.xfm);
605			multv3(pd, fa.farg+3, tot.xfm);
606			r0 = fa.farg[6] * tot.sca;
607			r1 = fa.farg[7] * tot.sca;
608	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
609			printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]);
610			printf(" %18.12g %18.12g\n", r0, r1);
611	greg	1.14	freefargs(&fa);
612	greg	1.1	return(0);
613	greg	1.11	}
614
615
616			initotypes() /* initialize ofun[] array */
617			{
618			extern int o_source();
619			extern int o_sphere();
620			extern int o_face();
621			extern int o_cone();
622			extern int o_cylinder();
623			extern int o_ring();
624			extern int m_glow();
625			extern int m_spot();
626			extern int m_dielectric();
627			extern int m_interface();
628			extern int text();
629			extern int alias();
630			extern int passargs();
631			extern int addxform();
632			register int i;
633
634			if (ofun[OBJ_SOURCE].funp == o_source)
635			return; /* done already */
636			/* alias is additional */
637			ofun[ALIAS].funame = ALIASID;
638			ofun[ALIAS].flags = 0;
639			/* functions get new transform */
640			for (i = 0; i < NUMTYPES; i++)
641			if (hasfunc(i))
642			ofun[i].funp = addxform;
643			/* special cases */
644			ofun[OBJ_SOURCE].funp = o_source;
645			ofun[OBJ_SPHERE].funp =
646			ofun[OBJ_BUBBLE].funp = o_sphere;
647			ofun[OBJ_FACE].funp = o_face;
648			ofun[OBJ_CONE].funp =
649			ofun[OBJ_CUP].funp = o_cone;
650			ofun[OBJ_CYLINDER].funp =
651			ofun[OBJ_TUBE].funp = o_cylinder;
652			ofun[OBJ_RING].funp = o_ring;
653			ofun[OBJ_INSTANCE].funp = addxform;
654			ofun[MAT_GLOW].funp = m_glow;
655			ofun[MAT_SPOT].funp = m_spot;
656			ofun[MAT_DIELECTRIC].funp = m_dielectric;
657			ofun[MAT_INTERFACE].funp = m_interface;
658			ofun[PAT_CTEXT].funp =
659			ofun[PAT_BTEXT].funp =
660			ofun[MIX_TEXT].funp = text;
661			ofun[ALIAS].funp = alias;
662	greg	1.1	}